VERFAHREN ZUR AUFARBEITUNG EINES BUTEN- UND/ODER BUTADIEN ENTHALTENDEN STOFFSTROMS
    70.
    发明公开
    VERFAHREN ZUR AUFARBEITUNG EINES BUTEN- UND/ODER BUTADIEN ENTHALTENDEN STOFFSTROMS 有权
    VERFAHREN ZUR AUFARBEITUNG EINES BUTEN - UND / ODER BUTADIEN ENTHALTENDEN STOFFSTROMS

    公开(公告)号:EP2681178A1

    公开(公告)日:2014-01-08

    申请号:EP12706605.8

    申请日:2012-03-02

    Applicant: BASF SE

    CPC classification number: B01D3/40 C07C7/04 C07C7/08 C07C7/11 C07C11/16 C07C11/167

    Abstract: The invention relates to a process for workup of a stream (1) comprising butene and/or butadiene, butane, hydrogen and/or nitrogen and carbon dioxide, comprising the following steps: (a) absorption of the stream (1) comprising butene and/or butadiene, butane, hydrogen and/or nitrogen, with or without carbon dioxide, with a mixture (5) comprising 80 to 97% by weight of N-methylpyrrolidone and 3 to 20% by weight of water to obtain a stream (9) comprising N-methylpyrrolidone, water, butene and/or butadiene, and butane, with or without carbon dioxide, and a stream (7) comprising hydrogen and/or nitrogen and butane, (b) extractive distillation of the stream (9) comprising N-methylpyrrolidone, water, butene and/or butadiene, and butane, with or without carbon dioxide, with a stream (13) comprising 80 to 97% by weight of N-methylpyrrolidone and 3 to 20% by weight of water to separate the stream (9) comprising N-methylpyrrolidone, water, butene and/or butadiene, and butane, with or without carbon dioxide, into a stream (17) comprising N-methylpyrrolidone, water, butene and/or butadiene, and a stream (15) comprising essentially butane, with or without carbon dioxide, (c) distillation of the stream (17) comprising N-methylpyrrolidone, water, butene and/or butadiene into a stream (23) comprising essentially N-methylpyrrolidone and water, and a stream (21) comprising butene and/or butadiene.

    Abstract translation: 本发明涉及包含丁烯和/或丁二烯,丁烷,氢气和/或氮气和二氧化碳的物流(1)的处理方法,其包括以下步骤:(a)将包含丁烯和 (5)包含80-97重量%的N-甲基吡咯烷酮和3-20重量%的水以获得流(9),所述混合物(5)包含具有或不具有二氧化碳的丁二烯,丁烷,氢和/ )包含N-甲基吡咯烷酮,水,丁烯和/或丁二烯和丁烷(含有或不含二氧化碳)以及包含氢和/或氮和丁烷的物流(7),(b)物流(9)的萃取蒸馏包含 (13)包含80-97重量%的N-甲基吡咯烷酮和3-20重量%的水以分离含有或不含二氧化碳的N-甲基吡咯烷酮,水,丁烯和/或丁二烯和丁烷, 包含N-甲基吡咯烷酮,水,丁烯和/或丁二烯和丁烷的物流(9),有或没有汽车 (17),包含N-甲基吡咯烷酮,水,丁烯和/或丁二烯,以及基本上包含丁烷的物流(15),其中含有或不含有二氧化碳,(c)蒸馏包含N (23)和包含丁烯和/或丁二烯的物流(21),所述物流(23)基本上包含N-甲基吡咯烷酮和水。

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